Abstract

The purpose of this research was to determine the effect of macro mineral supplementation on different
levels of glucose, milk lactose, and milk production. This research used 25 milk cows with the first to fifth
lactation, whose their body weight, milk production and fat content were relatively similar. There were 5 of
macro mineral supplementation levels : 0, 25, 50, 75, 100% above NRC (2001) recommendation, that were
Ca, P, Mg, Na, S, dan K each 0.50; 0.30; 0.20; 0.18; 0.20 and 0.90%. Data obtained were analyzed using
variance analysis of randomized block design, and to purpose differently of treatment mean using Duncan's
Multiple Range Test, and the relation of treatments were analyzed using polynomial orthogonal analysis.
Based on result of research showed that supplementation of macro mineral up to 50% above the NRC
(2001) recommendation increased blood glucose, milk lactose on the normal range, and milk production,that
were each 28.82 mg/100 ml; 5.28 mg/100 ml and 11.513 kg 4% FCM/day/head.
Keywords : macro mineral, glucose, lactose, milk production